US12574486B2ActiveUtilityA1
Stereoscopic display device and control method thereof
Est. expiryApr 28, 2043(~16.8 yrs left)· nominal 20-yr term from priority
G02B 27/0012H04N 13/398H04N 13/383H04N 13/307H04N 13/305G02B 30/27H04N 13/229
47
PatentIndex Score
0
Cited by
24
References
19
Claims
Abstract
A stereoscopic display device and a control method thereof are provided. The display device includes: a display substrate, including a base substrate and a plurality of pixel units provided on the base substrate, where the plurality of pixel units are arranged in an array in a first direction and a second direction intersecting with the first direction; a cylindrical lens array located on a light exit side of the display substrate; and a controller configured to: determine a layout period according to a relative positional relationship between a human eye, the cylindrical lens array and the display substrate and according to a refraction of the cylindrical lens array for light emitted by the plurality of pixel units; and control the plurality of pixel units to periodically display a left eye image and a right eye image according to a determined layout period.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A stereoscopic display device, comprising:
a display substrate, comprising a base substrate and a plurality of pixel units provided on the base substrate, wherein the plurality of pixel units are arranged in an array in a first direction and a second direction intersecting with the first direction; a cylindrical lens array located on a light exit side of the display substrate; and a controller configured to: determine a layout period according to a relative positional relationship between a human eye, the cylindrical lens array and the display substrate and according to a refraction of the cylindrical lens array for light emitted by the plurality of pixel units; and control the plurality of pixel units to periodically display a left eye image and a right eye image according to a determined layout period, wherein the cylindrical lens array comprises a plurality of cylindrical lenses arranged in the first direction; wherein a design point on a cylindrical lens corresponds to a first light exit point and a second light exit point on a light exit surface of the display substrate, light emitted from the first light exit point and incident on the design point enters the human eye after being refracted by the cylindrical lens, and the second light exit point, the design point and the human eye are located on a same straight line; and wherein the controller is configured to determine the layout period such that a distance between the first light exit point and the second light exit point in the first direction is less than or equal to a specified value, so as to avoid a crosstalk between images displayed by two adjacent layout units, and the layout unit comprises at least one pixel unit configured to display the left eye image or the right eye image, and a plurality of layout units are periodically arranged in the first direction according to the layout period.
2 . The stereoscopic display device according to claim 1 , wherein the controller is configured to determine a plurality of layout periods, the cylindrical lens array comprises a plurality of cylindrical lenses arranged in the first direction, and the plurality of layout periods correspond to the plurality of cylindrical lenses respectively; and
wherein at least two cylindrical lenses correspond to different layout periods.
3 . The stereoscopic display device according to claim 2 , wherein the plurality of cylindrical lenses comprise a central cylindrical lens, a left cylindrical lens and a right cylindrical lens, the central cylindrical lens is a cylindrical lens for the human eye, and the left cylindrical lens and the right cylindrical lens are two cylindrical lenses closest to edges of the display substrate in the first direction respectively; and
wherein the layout periods corresponding to cylindrical lenses in a first group of cylindrical lenses are different from each other, and/or the layout periods corresponding to cylindrical lenses in a second group of cylindrical lenses are different from each other, the first group of cylindrical lenses comprises cylindrical lens continuously arranged in the first direction from the central cylindrical lens to the left cylindrical lens, and the second group of cylindrical lenses comprises cylindrical lens continuously arranged in the first direction from the central cylindrical lens to the right cylindrical lens.
4 . The stereoscopic display device according to claim 3 , wherein the layout periods corresponding to the cylindrical lenses in the first group of cylindrical lenses change in a linear continuous manner, and/or the layout periods corresponding to the cylindrical lenses in the second group of cylindrical lenses change in a linear continuous manner.
5 . The stereoscopic display device according to claim 4 , wherein the layout periods corresponding to the cylindrical lenses in the first group of cylindrical lenses are linearly reduced, and/or the layout periods corresponding to the cylindrical lenses in the second group of cylindrical lenses are linearly reduced.
6 . The stereoscopic display device according to claim 4 , wherein the layout period corresponding to each cylindrical lens in the first group of cylindrical lenses is linearly negatively correlated with a first distance, and the first distance is a distance between each cylindrical lens in the first group of cylindrical lenses and the central cylindrical lens; and/or
the layout period corresponding to each cylindrical lens in the second group of cylindrical lenses is linearly negatively correlated with a second distance, and the second distance is a distance between each cylindrical lens in the second group of cylindrical lenses and the central cylindrical lens, wherein a linear correlation determined by the controller meets:
Δ
x
=
α
×
Δ
x
max
-
Δ
x
min
k
max
-
k
min
×
k
where α is a correction coefficient
Δ
x
max
=
P
×
E
z
+
h
E
z
,
Δx min represents a layout period corresponding to a maximum allowable pitch of the cylindrical lenses, and k represents a number of the cylindrical lenses from the central cylindrical lens in the first group of cylindrical lenses or the second group of cylindrical lenses.
7 . The stereoscopic display device according to claim 3 , wherein the layout periods corresponding to the cylindrical lenses in the first group of cylindrical lenses change in a non-linear continuous manner, and/or the layout periods corresponding to the cylindrical lenses in the second group of cylindrical lenses change in a non-linear continuous manner.
8 . The stereoscopic display device according to claim 7 , wherein the layout periods corresponding to the cylindrical lenses in the first group of cylindrical lenses are non-linearly reduced, and/or the layout periods corresponding to the cylindrical lenses in the second group of cylindrical lenses are non-linearly reduced.
9 . The stereoscopic display device according to claim 7 , wherein the layout period corresponding to each cylindrical lens in the first group of cylindrical lenses is a pitch of two layout units corresponding to two adjacent cylindrical lenses; and/or
wherein the layout period corresponding to each cylindrical lens in the second group of cylindrical lenses is a pitch of two layout units corresponding to two adjacent cylindrical lenses, wherein the layout period corresponding to each cylindrical lens in the first group of cylindrical lenses and/or the layout period corresponding to each cylindrical lens in the second group of cylindrical lenses meet:
y
k
(
k
)
=
k
×
P
+
h
1
-
1
n
2
+
(
E
z
k
×
P
)
2
;
(
k
>
0
)
Δ
x
=
y
k
(
k
)
-
y
k
(
k
-
1
)
where P represents a pitch of adjacent cylindrical lenses, h represents an equivalent air distance between the cylindrical lens and the display unit, n represents a ratio of a refractive index n 2 of the cylindrical lens to a refractive index n 1 of a first dielectric layer, and E x represents a distance between the human eye and the central cylindrical lens in the first direction.
10 . The stereoscopic display device according to claim 1 , wherein the controller is configured to determine a plurality of layout periods, the cylindrical lens array comprises a plurality of cylindrical lenses arranged in the first direction, and the plurality of layout periods correspond to the plurality of cylindrical lenses respectively; and
wherein at least two cylindrical lenses correspond to a same layout period.
11 . The stereoscopic display device according to claim 10 , wherein the plurality of cylindrical lenses correspond to a same layout period.
12 . The stereoscopic display device according to claim 10 , wherein each cylindrical lens corresponds to a layout period less than a layout period determined by:
Δ
x
=
P
×
E
z
+
h
E
z
where E z represents a viewing distance between the human eye and the stereoscopic display device, P represents a pitch of adjacent cylindrical lenses, and h represents an equivalent air distance between the cylindrical lens and the display unit.
13 . The stereoscopic display device according to claim 10 , wherein the plurality of cylindrical lenses comprise a central cylindrical lens, a first intermediate cylindrical lens, a second intermediate cylindrical lens, a left cylindrical lens and a right cylindrical lens, the central cylindrical lens is a cylindrical lens for the human eye, the left cylindrical lens and the right cylindrical lens are two cylindrical lenses closest to edges of the display substrate in the first direction, the first intermediate cylindrical lens and the second intermediate cylindrical lens are located on both sides of the central cylindrical lens, the first intermediate cylindrical lens is located between the central cylindrical lens and the left cylindrical lens, and the second intermediate cylindrical lens is located between the central cylindrical lens and the right cylindrical lens; and
wherein each cylindrical lens in the first group of cylindrical lenses corresponds to a first layout period, each cylindrical lens in the second group of cylindrical lenses corresponds to a second layout period different from the first layout period, the first group of cylindrical lenses comprises cylindrical lenses arranged continuously in the first direction from the first intermediate cylindrical lens to the second intermediate cylindrical lens, the second group of cylindrical lenses comprises cylindrical lenses arranged continuously in the first direction from the first intermediate cylindrical lens to the left cylindrical lens and cylindrical lenses arranged continuously in the first direction from the second intermediate cylindrical lens to the right cylindrical lens.
14 . The stereoscopic display device according to claim 13 , wherein the first layout period is greater than the second layout period.
15 . The stereoscopic display device according to claim 14 , further comprising:
a human eye tracking module configured to track a position of the human eye; wherein the controller is further configured to determine the relative positional relationship between the human eye, the cylindrical lens array and the display substrate according to a tracked position of the human eye.
16 . The stereoscopic display device according to claim 15 , wherein the controller is further configured to:
determine layout periods and layout period change rates for a plurality of predetermined viewing distances respectively; establish a mapping relationship between the layout period change rate for each predetermined viewing distance and each cylindrical lens; acquire a position of the human eye in real time to determine a real-time viewing distance; determine a mapping relationship between the layout period change rate for a predetermined viewing distance closest to the determined real-time viewing distance and each cylindrical lens as a mapping relationship between the layout period change rate for the real-time viewing distance and each cylindrical lens; and calculate the layout period corresponding to each cylindrical lens for the real-time viewing distance according to the mapping relationship between the layout period change rate for the real-time viewing distance and each cylindrical lens.
17 . The stereoscopic display device according to claim 14 , wherein a distance y k between the first light exit point corresponding to the design point of the cylindrical lens and the central cylindrical lens meets:
y
k
(
k
)
=
k
×
P
+
hn
tan
θ
2
where θ 2 represents an angle between a light ray in the cylindrical lens and a normal line,
wherein a distance y no between the second light exit point corresponding to the design point of the cylindrical lens and the central cylindrical lens meets:
y
n
o
(
k
)
=
(
k
-
1
)
×
Δ
x
+
E
x
mod
Δ
x
;
E
x
>
0
y
n
o
(
k
)
=
k
×
Δ
x
+
E
x
mod
Δ
x
;
E
x
<
0
where E x represents a distance between the human eye and the central cylindrical lens in the first direction,
wherein a distance between the first light exit point corresponding to the design point of the cylindrical lens and the central cylindrical lens, the first layout period Δx 1 in the first group of cylindrical lenses and the second layout period Δx 2 in the second group of cylindrical lenses meet:
{
y
k
=
k
max
(
k
)
-
k
max
Δ
x
1
=
-
M
y
k
=
k
max
(
k
)
-
k
max
Δ
x
2
=
M
where M is the specified value, k max represents a number of cylindrical lenses from the central cylindrical lens to the first intermediate cylindrical lens or to the second intermediate cylindrical lens, Δx 1 represents the layout period corresponding to the first group of cylindrical lenses, and Δx 2 represents the layout period corresponding to the second group of cylindrical lenses.
18 . A control method for a stereoscopic display device, wherein the stereoscopic display device comprises: a display substrate, comprising a base substrate and a plurality of pixel units provided on the base substrate, wherein the plurality of pixel units are arranged in an array in a first direction and a second direction intersecting with the first direction; and a cylindrical lens array located on a light exit side of the display substrate; the control method comprising:
determining a layout period according to a relative positional relationship between a human eye, the cylindrical lens array and the display substrate and according to a refraction of the cylindrical lens array for light emitted by the plurality of pixel units; and controlling the plurality of pixel units to periodically display a left eye image and a right eye image according to a determined layout period, wherein the cylindrical lens array comprises a plurality of cylindrical lenses arranged in the first direction; wherein a design point on a cylindrical lens corresponds to a first light exit point and a second light exit point on a light exit surface of the display substrate, light emitted from the first light exit point and incident on the design point enters the human eye after being refracted by the cylindrical lens, and the second light exit point, the design point and the human eye are located on a same straight line; and wherein the controller is configured to determine the layout period such that a distance between the first light exit point and the second light exit point in the first direction is less than or equal to a specified value, so as to avoid a crosstalk between images displayed by two adjacent layout units, and the layout unit comprises at least one pixel unit configured to display the left eye image or the right eye image, and a plurality of layout units are periodically arranged in the first direction according to the layout period.
19 . The control method according to claim 18 , further comprising:
tracking a position of the human eye; and determining the relative positional relationship between the human eye, the cylindrical lens array and the display substrate according to a tracked position of the human eye.Join the waitlist — get patent alerts
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